The placenta is usually functioning to deliver nutrients and oxygen to, and remove waste from, the embryonic blood by the __________ of pregnancy.

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asked Jul 6, 2018 51.1k views

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The placenta is usually functioning to deliver nutrients and oxygen to, and remove waste from, the embryonic blood by the __________ of pregnancy.

Biology
high-school

Harald Scheirich asked

by Harald Scheirich

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1 Answer

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the third week of pregnancy

Laverne answered Jul 10, 2018

by Laverne

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